Hoist



Oct. 17, 1944. H. F. PARKER HoIsT Filed oct. 29, 1941 3 Sheets-Sheet l@q www@ w n. w ww w INVENTOR Haw/mr f.' Meki/e Oct. 17, 1944. H, FPARKER 2,360,713

HoisT Filed 001'.. 29, 1941 3 Sheets-Sheet 2 Oct. 17, 1944. H. F. PARKER2,360,713

HOIST- Filed ou. .29,4 1941 s sheets-sheet s INVENTOR Y ATT NEYSPatented Oct. 17, 1944 HOIST Humphrey F. Parker, Kenmore, N. Y.,assignor to Columbus McKinnonv Chain Corporation, Tonawanda, N. Y., acorporation of New York Application October 29, 1941, Serial No. 416,981

8 Claims.

My invention relates in general to electrically driven cable hoists, andparticularly to that type of hoist in which the drum and the motor arein spaced relation with each other and have their axes substantiallyparallel one to the other.

As is well known to those skilled in the art, in hoists of this type itis desirable-that compactness be achieved in order that economy may behad in the manufacturing of the same.

To this end it has been the principal object oi my invention to placethe idler sheave of the hoist between the motor and the drum and to soposition it that the drum and motor of the hoist may be compactlyarranged.

Another object of my invention has been to mount the idler sheavebetween the longitudinally extending members of the frame of the hoistand to arrange the axis of the sheave substantially at right angles tothe axes of the drum and motor.

The above objects and advantages have been accomplished by the deviceshown in the accompanying drawings, of which:

Fig. 1 is a side elevation of my hoist with portions thereof brokenaway;

Fig. 2 is a fragmentary, sectional elevation taken on line II-II of Fig.1; and

Fig. 3 is a plan view of my invention with portions thereof broken away.

My hoist comprises a hoist frame I having a casing part II for enclosingthe drum I2 at one side thereof and a motor cover I3 at the other sideof the frame for enclosing the motor I4. Extending longitudinally acrossthe hoist frame are two oppositely arranged Z-bars I5 and I6. These barshave their downwardly extending legs 20 and 2I arranged in spacedrelation with each other and separated by means of a filler strip 22.The upward extending legs 23 and 25 of the Z-bars I5 and I6,respectively, are provided with apertures 26 whereby the-hoist may besuitably suspended.

Secured to the inner faces of the downwardly extending legs 20 and 2| ofthe Z-bars I5 and I6, respectively, are idler sheave hangers 30. Theidler sheave 3I is disposed between these sheave hangers and isrotatably mounted upon an idler sheave shaft 32. The shaft 32 is mountedin suitable apertures formed in the hangers and may be held in place bya lock plate 33.

Carried by the downwardly extending leg 2| of the Z-bar I6 is a' deadend spool 34 over which the dead end 35 of the cable 55 is passed andfrom whence it extends downwardly to the traveling block 36. Passingupwardly through this spool Vis a detent screw 40, a flattened surface4I being provided on the under side of the spool. for engagement withthe head of the screw. The screw is oi sufficient llength to have its'upper end extend beyond the periphery of the spool to act as a detent toretain the dead end 35i of the cable in place uponthe'spooh Y 'The hoistframe is provided wlth 'a gear housing 42 at one end and with a controlhousing'43` at the other end. Suitable covers 44 and 4.5, re-'-Yspectively, are provided for enclosing vthe. hous--vr ings 42 and 43. ly

The gear housing 42 contains the gears for connecting the electric motorI 4 to the drum I2 and the control housing 43 contains the electricalcontrols and also the limit lever 46 for controlling the vupwardmovement of the traveling block 36. Since these parts do not forma partof my invention, they are not further shown or described. f

An end wall 5D is arranged at the gear housing end of the casing and anend wall 5I is arranged at the control housing end thereof. The wallsrare integral parts of the casing and a ange 576 formed along the topedge of each engages and is secured to the Z-bars I5 and I6.l A dead endanchor bracket 52 is engaged with the bottomv edge of the casing endwall 5I] where it is suitably secured in place. This bracket isprefer--VV ably placed at the left-hand side of the plane passingthrough the sheave, as shown in Fig.'2, so that the dead end 35 of thecable willbe tightly drawn against the leg 2| of the Z-bar I6 and thusbe securely held in place uponthe dead end spool 34. A dead 'end anchorblock 53 is secured to the upwardly extending leg ofthe bracket 52 andthis anchor block servesto attachthe dead end 35 of the cable to thehoist casing. Y

yThe drum I2 of my invention yis, suitablyV mounted in bearingsYprovided inthe end plates 53 and 5I and in the gear housing 42.`'Ifhebearings for the drum and the gears connecting the Y drum with themotor do not form part of the present invention and are not thereforefurtherV shown or described. The drum is provided with the customaryhelically formed groove/54 forthe reception of the cable A55. y From theforegoing it will be clear that the cable 55 passes upwardly from thedead end anchor around the dead anchor spool 34 and thence Adownwardlyaround the first sheave ofL the traveling block 36. From this sheave thecable passes upwardly between the drum and motor and around theidlersheave 3I in a plane not, therefore, wish to be limited to theexact4 embodiment herein shown and described, the form shown beingmerely a preferred embodiment thereof.

What is claimed is:

1. A hoist comprising a housing, a cable drumY rotatably carriedthereby, a cable engaging the periphery of the drum and having a deadend, an electric motor carried by said housing and arranged in spacedrelation with said drum, means for operatively connecting said moto-rand said drum,: an anchor carried by said cable for securing the deadend thereof to said housing, centrally arranged supporting membersdisposed across the top of the housing and being longitudinally arrangedwith respect to the axis of the drum, hangers depending from saidmembers and disposed between said drum and said motor, and an idlersheave carried by said housing and engageable with the active portion ofthe cable, said sheave being disposed between and rotatably supported bysaid hangers and having its axis substantially perpendicular to the axisof said drum.

2. A hoist comprising a housing, a cable drum rotatably carried thereby,a'cable engaging the periphery of the drum and having a dead end, anelectric motor carried by said housing and arranged in spaced relationwith said drum, means operatively connecting said motor and said drum,an anchor carried by said cable for securing the dead end thereof tosaid housing, centrally arranged supporting members disposed across thetop of the housing and being longitudinally arranged with respect to theaxis of the drum, hangers depending from said members and disposedbetween said drum and vsaid motor, a dead end spool carried by one ofsaid members for supporting that portion of the cable adjacent the deadend near the top of the housing, and an idler sheave carried by saidhousing and engageable with the active portion of thev cable, saidsheave being disposed between and rotatably supported by said hangersand having its axis substantially perpendicular to the axis of saiddrum.

3. In a hoist, the combination with a casing, a drum rotatably carriedthereby, a motor carried by'said casing for driving said drum, a cableengaging the drum and having a dead end, of parallel Z-bars located nearthe top of the casing and arranged in planes substantially parallel withthe axis of the drum, said bars having their downwardly extending legsarranged adjacent eachother andv in spaced relation, a dead end spoolcarried, by one of said downwardly extending legs for supporting thatportion of the cable adjacent to the dead end thereof near the top ofthe casing, an anchorvsecu-red to the dead end of said cable, an. anchorbracket carried by said, casing and having connection with said anchor,rand an idler sheave rotatably supported by and between said downwardlyextending Z-barl-legs and engageable with an active portion of saidcable, said sheave being so disposed as to have its plane of rotationsubstantially parallel to said legs.

4. In a four-part rope hoist, the combination with a casing, a drumrotatably4 carried thereby, a

-by and between said downwardly extending legs and being engageable withan active portion of said cable, the space between said drum and saidmotor being substantially greater than the thickness of said sheave andnarrower than the diameter thereof, said sheave having its axissubstantially perpendicular to the faces of the downwardly extendinglegs.

5. In a hoist having a rope o-f more than two parts, the combinationwith a casing, a drum rotatably carried thereby, a motor carried by saidcasing for driving the drum, a traveling block, and a cable engagingsaid drum and said block and having a dead end, of a centrally arrangedstifening member carried by the casing and located near the top thereofand substantially parallel to the axis ofsaid drum, said member havingparallel depending anges arranged adjacent each other and in spacedrelation, said depending flanges lying in planes which are substantiallyparallel to each other and located above the space between said drum andsaid motor, and an idler sheave rotatably supported by and between saiddepending flanges and being engaged. with an active portion of saidcable, the space between said drum and motor being substantially greaterthan the thickness of the sheave and narrower than the diameter thereof,said sheave having its axis substantially perpendicular to the faces ofthe downwardly depending flanges.

6. A hoist comprising a housing, a cable drum rotatably carried thereby,a cableengaging the periphery of the drum and having a dead end, anelectric motor carried4 by said housing andarranged in a spaced relationwith said drum, means operatively connecting said motor and said drum,supporting members disposed across the top of the housing and arrangedlongitudinally with respect to the axis ofthe drum, a dead end spoolcarried by one of said members near the top of said `housing forsupporting that portion of said cable adjacent the dead end, anchoringmeans carried by said housing and located beneath said'dead end spool,anA anchor secured to the dead end of said cable and engaging saidanchoring means, spaced hangers depending from said members and disposedbetween said drum and said motor, and an idler sheavel rotatablysupported between said hanger and engageable with an active portion ofthe cable, said sheave having its axis substantially perpendicular tothe 'axis of said drum.

7. In a hoist, the combination with a casing, a cable drum, rotatablysupported thereby, an electric motor carried by said casing for drivingsaid drum, a cable engaging the drum and having a dead end, and atraveling block, of means for reeving. the cable, comprising an idlersheave carried by and enclosed within said casing, said sheave beingengageable with an active portion of said cable andmountedfintermediately between said drum and said motor, said sheavehaving its axis substantially perpendicular to the axis of said drum, ananchor secured to the dead end of the cable, supporting means near thetop oi sai-dicasingior supporting a loop in the dead end of the cableand from which the cable passes downwardly for engagement with saidtraveling block, means secured to said casing and arranged beneath saidsupporting means for attaching said anchor; said sheave and said anchorbeing so disposed as to be on the side of the drum having l sheave beingengageable with an active portion of said cable and mounted between saiddrum and said motor, said sheave having its axis substantiallyperpendicular to the axis of said drum, a dead end spool carried by saidcasing near the top thereof for the support of a loop in the dead endportion of the cable, the cable passing downwardly from said spool forengagement with said traveling block, anchoring means carried by saidhousing and located beneath said dead end spool, an anchor secured tothe dead end of said cable and engaging said anchoring means, saidsheave and said anchor being disposed on the same side of the drum asthat having the tangentially depending pass of the cable from the drum.

HUMPHREY F. PARKER.

